<template>
  <div class="site-wrapper site-page--login">
    <div class="site-content__wrapper">
      <div class="site-content">
        <div class="brand-info">
          <h2 class="brand-info__text">在线签章系统</h2>
          <p class="brand-info__intro"></p>
        </div>
        <div class="login-main">
          <h3 class="login-title">用户登录</h3>
          <el-form :model="dataForm" :rules="dataRule" ref="dataForm" @keyup.enter.native="dataFormSubmit()" status-icon>
            <el-form-item prop="username">
              <el-input v-model="dataForm.username" placeholder="帐号(4-15位字符串)" maxlength="15" minlegth="4" clearable></el-input>
            </el-form-item>
            <el-form-item prop="password">
              <el-input v-model="dataForm.password" type="password" placeholder="密码(6-18位字符串)" maxlength="18" minlegth="6"></el-input>
            </el-form-item>
            <el-form-item prop="captcha">
              <el-row :gutter="20">
                <el-col :span="14">
                  <el-input v-model="dataForm.captcha" placeholder="验证码">
                  </el-input>
                </el-col>
                <el-col :span="10" class="login-captcha">
                  <img :src="captchaPath" @click="getCaptcha()" alt="">
                </el-col>
              </el-row>
            </el-form-item>
            <el-form-item>
              <el-button class="login-btn-submit" type="primary" @click="dataFormSubmit()">登录</el-button>
            </el-form-item>
            <a style="float:right" >找回密码</a>
          </el-form>
        </div>
      </div>
    </div>
  </div>
</template>

<script>
  import * as types from '../store/mutation-types'
  import { mapMutations } from 'vuex'
  import API from '@/api'
  import {getUUID} from "../utils";

  export default {
      name: "login",
      data(){
        return {
          defaulttime:'',
          dataForm: {
            username: '',
            password: '',
            uuid: '',
            captcha: ''
          },
          dataRule: {
            username: [
              { required: true, message: '帐号不能为空', trigger: 'blur' },
              {min: 4, max: 15, message: '长度为4-15个字符', trigger: 'blur'}
            ],
            password: [
              { required: true, message: '密码不能为空', trigger: 'blur' },
              {min: 6, max: 18, message: '长度为4-15个字符', trigger: 'blur'}
            ],
            captcha: [
              { required: true, message: '验证码不能为空', trigger: 'blur' }
            ]
          },
          user:{},
          captchaPath: ''
        }
      },
      methods:{
        dataFormSubmit(){
          API.common.login(this.dataForm).then((res)=>{
            if(!res.data.code){
              this.$cookie.set('token', res.data.token, { expires: `${res.data.expire || 0}s` }); //token失效时间
              this.$store.commit(types.LOGIN,res.data.token);
              this.$message({
                "message":"登录成功",
                "type":"success"
              });
              this.$store.state.contentTabs.length = 0; //清空state中存储的tab项
              this.$router.push({path:"/home"});  //登录显示的首页
            }else {
              this.defaulttime++;
              console.log(this.defaulttime);
              if(this.defaulttime>5)
              {
               this.$message({
                 "message":"错误次数过多，请找回密码！"
               });
              }
              else {
                this.$message({
                  "message": res.data.msg,
                  "type": "error"
                });
                this.getCaptcha();
              }
            }
          }).catch((error)=>{
            console.log(error);
          })
        },
        getCaptcha(){
          this.dataForm.uuid = getUUID();
          this.captchaPath = API.common.captcha(this.dataForm.uuid);
        },
        ...mapMutations(['UPDATE_MENU_NAV_LIST', 'UPDATE_CONTENT_TABS_ACTIVE_NAME'])
      },
      created(){
        this.getCaptcha();
      }
    }
</script>

<style lang="scss">
  .site-wrapper.site-page--login {
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    background-color: rgba(38, 50, 60, .4);
    overflow: hidden;
    &:before {
      position: fixed;
      top: 0;
      left: 0;
      z-index: -1;
      width: 100%;
      height: 100%;
      content: "";
      background-image: url(~@/assets/img/login.jpg);
      background-size: cover;
    }
    .site-content__wrapper {
      position: absolute;
      top: 0;
      right: 0;
      bottom: 0;
      left: 0;
      padding: 0;
      margin: 0;
      overflow-x: hidden;
      overflow-y: hidden;
      background-color: transparent;
    }
    .site-content {
      min-height: 100%;
      padding: 70px 100px 0 30px;
    }
    .brand-info {
      right:0;
      margin: 200px 0 0 700px;
      color: #fff;
    }
    .brand-info__text {
      margin:  0 0 100px 0;
      font-size: 48px;
      font-weight: 400;
      text-transform : uppercase;
    }
    .brand-info__intro {
      margin: 10px 0;
      font-size: 16px;
      line-height: 1.58;
      opacity: .6;
    }
    .login-main {
      position: absolute;
      top: 0;
      left: 0;
      padding: 180px 80px 0;
      width: 600px;
      min-height: 100%;
      background-color: #fff;
    }
    .login-title {
      font-size: 16px;
    }
    .login-captcha {
      overflow: hidden;
      > img {
        width: 100%;
        cursor: pointer;
      }
    }
    .login-btn-submit {
      width: 100%;
      margin-top: 20px;
    }
  }
</style>
